[PRCo] Pittsburgh Railways maps

[Bill Robb]

I was given a Pittsburgh Railways Transit guide by a
friend on Monday night.  There is no noticeable date
on the map.  

I've been able to narrow it down to between 12/27/53
and 1/1/56 by the 20 cent trolley and feeder bus fare
and the 25 cent cash or 5 ticket for $1.15 through bus
fare.  Using the March-April 1975 Motor Coach Age
article on Pittsburgh Railways I can narrow it down
further to after 6/7/53 when the P&LE Transfer went
bus.

Is there any hidden indication of the date this map
was issued?  I see a code at the bottom of the front
cover: 10316-26X.

Bill Robb

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